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JANUARY 2008 UCCS STANDARDS 15950-19
5. Individual damper sections shall not have a single dimension (length or height) greater
than 48". Provide a minimum of one damper actuator per section.
6. Modulating dampers shall provide a linear flow characteristic where possible. Size
the dampers to achieve this characteristic and and consider approved blade dampers fot
this application.
7. Dampers shall have exposed linkages.
B. Control dampers shall be parallel or opposed-blade type as below or as scheduled on
drawings.
1. Outdoor and/or return air mixing dampers and face-and-bypass (F&BP) dampers shall
be combination parallel/opposed-blade, approximately 57% OB, arranged to direct
airstreams towards each other.
2. Other modulating dampers shall be opposed-blade type.
3. Two-position shutoff dampers may be parallel or opposed-blade type with blade and
side seals.
2.05 LOCAL CONTROL PANELS
A. All outdoor control cabinets shall be fully-enclosed, NEMA-1 construction, with hinged
door, key-lock latch, baked-enamel finish, removable sub-panels, UL-listed, wall-mounted
or free-standing as indicated on plans.
B. Panels shall house the microprocessor, modem, communication interface, all controllers
(except those required at VAV boxes), relays, indicators, clocks, switches, pilot lights,
override timers, etc., to allow quick access for adjustment and troubleshooting.
C. Manual switches and indicating devices shall be flush-mounted on panel face.
D. Internal components shall be securely mounted on removable sub-panels. Each component
shall be individually labeled with function and device identification, as shown on
control/interlock shop drawings.
E. Interconnections between internal and face-mounted devices pre-wired with color-coded
stranded conductors neatly installed in plastic troughs and/or tie-wrapped. Terminals for
field connections shall be UL-listed for 600-volt service, individually identified per
control/interlock drawings, with adequate clearance for field wiring. Control terminations
for field connection shall be individually identified per control drawings.
F. Provide on/off power switch with over-current protection and a 1-1/2” main air gauge for
control pressure sources to each local panel. Provide a 120-volt duplex outlet inside each
control panel that houses a DDC controller (except VAV controllers) if there is not an out-